US 11,929,624 B2
Module-shared flexible loop closing controller topology for power grid
Wu Chen, Nanjing (CN); and Guohao He, Nanjing (CN)
Assigned to SOUTHEAST UNIVERSITY, Nanjing (CN)
Appl. No. 17/639,439
Filed by SOUTHEAST UNIVERSITY, Nanjing (CN)
PCT Filed Jun. 23, 2021, PCT No. PCT/CN2021/101743
§ 371(c)(1), (2) Date Mar. 1, 2022,
PCT Pub. No. WO2022/033185, PCT Pub. Date Feb. 17, 2022.
Claims priority of application No. 202010801092.9 (CN), filed on Aug. 11, 2020.
Prior Publication US 2022/0302714 A1, Sep. 22, 2022
Int. Cl. H02J 3/46 (2006.01); H02M 5/458 (2006.01)
CPC H02J 3/46 (2013.01) [H02M 5/4585 (2013.01); H02J 2203/10 (2020.01)] 8 Claims
OG exemplary drawing
 
1. A power network flexible closed-loop controller topology shared by modules, wherein each single-phase topology comprises:
an AC/AC (Alternating Current/Alternating Current) converter comprising N1 CHB (Cascaded H-Bridge) modules, and an AC/DC (Alternating Current/Direct Current) module comprising N−N1 full-bridge rectifiers;
AC (Alternating Current) input terminals of the N1 CHB modules are connected in series to form an AC (Alternating Current) port on one side of the AC/AC converter,
AC output terminals of the N1 CHB modules are connected in series to form another AC port on an other side of the AC/AC converter,
AC input terminals of the N−N1 full-bridge rectifiers are connected in series to form an AC port of the AC/DC module, the AC port on the one side of the AC/AC converter is connected in series with the AC port of the AC/DC module and then connected to a first AC network, the another AC port on the other side of the AC/AC converter is connected in series with the AC port of the AC/DC module and then connected to a second AC network, and an AC incoming line and an AC outgoing line of three-phase topology are connected to the first and second AC networks in a star connection mode, wherein N and N1 are positive integers and N is more than N1.